<template>
  <transition name="slide">
    <div class="add-song"
         v-show="showFlag"
         @click.stop>
      <div class="header">
        <h1 class="title">添加歌曲到播放列表</h1>
        <div class="close"
             @click="hide">
          <i class="icon-close"></i>
        </div>
      </div>
      <div class="search-box-wrapper">
        <search-box ref="searchBox"
                    @query="onQueryChange"
                    placeholder="搜索歌曲"></search-box>
      </div>
      <div class="shortcut"
           v-show="!query">
        <switches @select="selectSwitch"
                  :currentIndex="currentIndex"
                  :switches="switches"></switches>
        <div class="list-wrapper">
          <scroll ref="songList"
                  class="list-scroll"
                  :data="playHistory"
                  v-if="currentIndex===0">
            <div class="list-inner">
              <song-list :songs="playHistory"
                         @select="selectSong"></song-list>
            </div>
          </scroll>
          <scroll ref="searchHis"
                  v-if="currentIndex===1"
                  class="list-scroll">
            <div class="list-inner">
              <search-list :searches="searchHistory"
                           @select="setQuery"
                           @delete="deleteSearchHistory"></search-list>
            </div>
          </scroll>
        </div>
      </div>
      <div class="search-result"
           v-show="query">
        <div class="list-inner">
          <suggest :query="query"
                   :showSinger="showSinger"
                   @select="selectSuggest"
                   @scrollStarted="scrollStarted"></suggest>
        </div>
      </div>
      <top-tip ref="topTip">
        <div class="tip-title">
          <i class="icon-ok"></i>
          <span class="text">1首歌曲已经添加到播放列表</span>
        </div>
      </top-tip>
    </div>
  </transition>
</template>

<script>
import SearchBox from 'base/search-box/search-box'
import Suggest from 'components/suggest/suggest'
import { searchMixin } from 'common/js/mixin'
import Switches from 'base/switches/switches'
import Scroll from 'base/scroll/scroll'
import { mapGetters, mapActions } from 'vuex'
import SongList from 'base/song-list/song-list'
import Song from 'common/js/song'
import SearchList from 'base/search-list/search-list'
import TopTip from 'base/top-tip/top-tip'

export default {
  name: 'add-song',
  data () {
    return {
      showFlag: false,
      query: '',
      showSinger: false,
      currentIndex: 0, // 当前显示的开关
      switches: [
        { name: '最近播放' },
        { name: '搜索历史' }
      ]
    }
  },
  mixins: [searchMixin],
  components: { SearchBox, Suggest, Switches, Scroll, SongList, SearchList, TopTip },
  computed: {
    ...mapGetters(['playHistory'])
  },
  methods: {
    ...mapActions(['insertSong']),
    show () {
      this.showFlag = true
      setTimeout(() => {
        if (this.currentIndex === 0) {
          this.$refs.songList.refresh()
        } else {
          this.$refs.searchHis.refresh()
        }
      })
    },
    hide () {
      this.showFlag = false
    },
    search (query) {
      this.query = query
    },
    selectSuggest () {
      this.saveSearch()
    },
    selectSwitch (index) {
      this.currentIndex = index
    },
    selectSong (item, index) {
      // 因为最近听得歌已经在播放列表播放了
      if (index !== 0) {
        this.insertSong(new Song(item))
        this.$refs.topTip.show()
      }
    }
  }
}
</script>

<style lang="less" scoped>
@import "~common/css/variable";
@import "~common/css/mixin";
.add-song {
  position: fixed;
  top: 0;
  bottom: 0;
  width: 100%;
  z-index: 200;
  background-color: @color-background;
  &.slide-enter-active,
  &.slide-leave-active {
    transition: all 0.3s;
  }
  &.slide-enter,
  &.slide-leave-to {
    transform: translate3d(100%, 0, 0);
  }
  .header {
    position: relative;
    height: 44px;
    text-align: center;
    .title {
      line-height: 44px;
      font-size: @font-size-large;
      color: @color-text;
    }
    .close {
      position: absolute;
      top: 0;
      right: 8px;
      .icon-close {
        display: block;
        padding: 12px;
        font-size: 20px;
        color: @color-theme;
      }
    }
  }
  .search-box-wrapper {
    margin: 20px;
  }
  .shortcut {
    .list-wrapper {
      position: absolute;
      top: 165px;
      bottom: 0;
      width: 100%;

      .list-scroll {
        height: 100%;
        overflow: hidden;

        .list-inner {
          padding: 20px 30px;
        }
      }
    }
  }
  .search-result {
    position: fixed;
    top: 124px;
    bottom: 0;
    width: 100%;
  }
  .tip-title {
    text-align: center;
    padding: 18px 0;
    font-size: 0;
    .icon-ok {
      font-size: @font-size-medium;
      color: @color-theme;
      margin-right: 4px;
    }
    .text {
      font-size: @font-size-medium;
      color: @color-text;
    }
  }
}
</style>
